Fix OAuth according to HF official documentation

Update session management in FastAPI app, modify OAuth scopes in environment configuration, and enhance .env.example with session security details.

Implement conditional authentication middleware and OAuth routes for Hugging Face Spaces integration. Enhance environment debugging and add environment info endpoint. Update README with OAuth configuration details and improve startup logging.

Add environment configuration template, enhance .gitignore, and refactor configuration loading. Removed deprecated scripts and improved setup process with a new setup script.

🚀 Deploy AgentGraph: Complete agent monitoring and knowledge graph system

initial commit